Loose-leaf binder



March s, 192s. i 1,661,524

, P. BAUMER LoosE LEAF BINDER Filed Mayvl', 1927 u. if

j Patented Mar.l 6,7192'8.

N yUNITED STATES;

f 1,661,524Y f ,PAUL Batman, or 'EmmausELD, SWITZERLAND.

LOOSE-LEAF BINDER.

. Application tiled May 17, 1927, Serial No.`

The present invention relates to a looseleaf binder with which theleaves `are heldk between clamping members or plates and are pushed overholding members by means of unslotted holes and are further provided`with slotted.perforationsfor the passage 'of v,guide members adapted tobe putthrough one of the clamping members, the guide members being fixedin the other of the clamping members.` These guide lmembers serve tohold together the parts of the binder if changes .in the number or inthearrangement of the leaves are to be made so that. the stapleof leaves ora part thereof are solely held in position by the slotted perforationswhen changes are to be `made and when the leaves are pushed onto theguide ins. p According to the present` invention the aforementionedguide membersare-formed by the Shanks of a stirrup which are adapted tobe inserted into the second clamping mem, ber and fixed thereto; s

In this manner the tedious screwing. and

unscrewing of two single pins acting as lguide members withv the`hitherto known types of such bindersI .is avoidedk so that the handlingof the binder when changes have` to be made is considerably simplified.

A constructional example of the subject matter of the present inventionis illustrated on the accompanyingg'drawings, in which Fig. 1 is avertical sectionalong line If-I in Fig. 2 of the loose-leaf binder.

Fig. 2 is a plan view of the upper-.clamping member,

Fig. 3 is a planview of the lower clamping member,

Fig. 4 is an end leaf binder and Y.

Fig. 5 is a detail-showing some of the perforations of a leaf.

The loose leaves lare arranged between two hollow clamping bars orplates 2, 3. provided with the axles of hinge joints by means of whichcovers 4; are hinged. To screw nipples 5 fixed'in lthe bar` 3 two ex-`tensible post sections 6 are screwed with each of which two similarsections 6 are connected, which form holding members the length of whichcan be adjusted in order to permit altering the thickness of the binder.These holding members are provided with a head part 7 screwed to thesections 6, having two annular grooves 7 and 7 arranged elevation oftheloose 192,024, and in switzerland may 22, 192e.

lone above the other and with` which a lock"` lng slide 8, guided insidethe hollow bar 2 and normally held in its locking position by means oftension springs 9, cooperates. VA tongue 8 provided at one end of theslide 8 and projecting ybeyond'the one end of the hollow `bar 2 Hpermitsthe displacement of the slide against the influence of thesprings 9, sothat the bar 2 may be disengaged from the grooves of the head parts 7. Alock l0 removalv of the clamping bar 2 from the holding members 6, 6', 7is rendered impos` sible. At the side of the bar 2 adjacent to thestaple of leaves two plate springs 11 are permits theslecuring of theslide 8 initsy Vlocking position whereupon an undesired provided securedat one end to the clampf the two Shanks 12v`of the stirrup 12 passthrough slotted perforations 16 of the leaves, the stirrup 12l passesthrough holes provided 1n the clamping bar 2 and is loosely connectedwith the clamping bar 3, i. e,finserted into holes of the latter.y Inthe clamping bar 3 a locking slide 18 is providedadapted `to engageannular grooves provided at the ends of the Shanks 12 in Order to securethe stirrup in position. The slide 13 ,is nor-` mally held in itslocking position by means Y d of a tensionspring 14 andthe slide may bedisplaced out of its locking position for the purpose of releasing thestirrup 12 by Ameans of an extension 13 at theend of the slide 13.

If, rfor example, a leaf has to be removed i from the staple of leavesthe clamping bar v2 is first disengaged from the two holdingv members 6,6', 7 by withdrawing the slide 8, whereupon the two clamping bars 2 and3 which are placed so that their rear edges rest on a support, forinstance a table, are moved. away from each other. The clamping bar 2and the loose leaves-'1 are thereby guided changed is the lowermost ofthem. As the last-mentioned leaf is now only held in slottedperforations 16 on the horizontally placed shanks 12 of the stirrup itcan be easily removed from the staple without being injured. A new leafis inserted into the book in a similar manner.

It desired the head parts of the holding members may be provided withmore than two annular grooves arranged above each other so that acorrespondingly larger range in which the upper clamping bar can beadjusted along the holding members is provided, obviously these headparts may also bc provided with but a single annular groove.

I claim:

l. A; loose-leaf binder, comprising in combination, a lower claml'iingmember, an upper clamping member, extensible holding members fixed inthe lower clamping me1n ber, means adapted to tix the upper clampingmember to said holding members, astirrup whose shanks pass through theupper clamping member, and means to tix said Shanks in the lowerclamping member, the leaves to be inserted having unslottedperi'orations through which said holding members pass and slottedapertures for engaging with said guide members.

t2. A loose-leaf binder, comprising in combination, a lower clampingmember, an upper clamping member, extensible holding members lixed inthe lower clamping member. means adapted to tix the upper clampingmember to said holding members, a st-irrup whose shanks pass through theupper clamping member, and a locking slide guided in .said lowerclamping member and adapted to cooperate with notches in said shanks for.securing the latter in position, the leaves to be inserted havingunslotted perforations through which said holding members pass andslotted apertures for engaging with said guide members.

3. A loose-leaf binder, comprising in combination, a lower clampingmember, an upper clamping member, extensible holding members tixed inthe lower claniping member and provided with heads, a locking slideguided in said upper clamping member and adapted to engage said heads ofsaid holding members for iixing the upper clamping member to saidholding members, a stirrup whoseshanks pass through the upper clampingmember, and means to fix said Shanks in the lower clamping member, theleaves to be inserted having unslotted perforations through which saidholding members pass and slotted apertures for engaging with said guidemembers.

4. A loose-leaf binder, comprising in combination, a lower clampingmember, an upper clamping member, extensible holding members fixed inthe lower clamping member and provided with heads with a plurality ofannular grooves` one arranged above the other, a locking slide guided insaid upper clamping member and adapted to be selectively brought intoengagement with any one of said grooves for fixing the upper clampingmember to said holding members, a stirrup whose shanlts pass through theupper clamping members, and means to tix said shanks in the lowerclamping member, the leaves to be. inserted having unslottedperfor-ations through which said holding members pass and slottedapertures for engaging with said guide members.

A loose-leaf binder, comprising in combination, a lower clamping member,an upper clamping member provided with spring means at its lower side toengage the uppermost leaf, longitudinally adjustable holding membersfixed in the lower clamping member, means adapted to fix the upperclamping member to said holdin; r members, a stirrup whoseI lshanks passthrough the upper clamping member, and means to tix said shanks in thelower clamping member, the leaves to be inserted having unslottedpertorations through which said holding,r members pass and slottedapertures for engaging with said guide members.

A loose-leaf binder, comprising in combination, a lower clamping member,an upper clamping member, extensible holding members lixed in the lowerclan'iping member and provided with heads with a plurality of annulargrooves one arranged above the other, a locking slide guided in saidupper clamping member and adapted to be selectively brought intoengagement with any one of said grooves for fixing the upper clampingmember to said holding memliers, a stirrup whose shanks pass through theupper clamping member, a locking slide guided in said lower clampingmember and adapted to cooperate with notches in said Shanks for securingthe latter in position, the leaves to be inserted having unslottedperforations through which `said holding members pass and slottedapertures for engaging with said guide members.

In testimony whereof, I have signed my name to this specification.

PAUL BAUMER.

